TY - JOUR

T1 - The missing asymptotic sector of rotating black-hole spectroscopy

AU - Keshet, Uri

AU - Ben-Meir, Arnon

N1 - Publisher Copyright:
© 2014 The Authors.

PY - 2014/10/7

Y1 - 2014/10/7

N2 - The rotation of a Kerr black hole splits its low-frequency spectrum in two, so it was so far unclear why the known highly-damped resonances show no splitting. We find the missing, split sector, with spin s quasinormal modes approaching the total reflection frequencies ω(n∈N)=-ΩδJ-iκ(n-s), where Ω, κ and δ. J are the horizon's angular velocity, surface gravity, and induced change in angular momentum. Surprisingly, the new sector is at least partly polar, and corresponds to reversible J transitions. Its fundamental branch converges quickly, possibly affecting gravitational wave signals. A simple interpretation of the Carter constant of motion is proposed.

AB - The rotation of a Kerr black hole splits its low-frequency spectrum in two, so it was so far unclear why the known highly-damped resonances show no splitting. We find the missing, split sector, with spin s quasinormal modes approaching the total reflection frequencies ω(n∈N)=-ΩδJ-iκ(n-s), where Ω, κ and δ. J are the horizon's angular velocity, surface gravity, and induced change in angular momentum. Surprisingly, the new sector is at least partly polar, and corresponds to reversible J transitions. Its fundamental branch converges quickly, possibly affecting gravitational wave signals. A simple interpretation of the Carter constant of motion is proposed.

UR - http://www.scopus.com/inward/record.url?scp=84909942499&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2014.09.011

DO - 10.1016/j.physletb.2014.09.011

M3 - Article

AN - SCOPUS:84909942499

SN - 0370-2693

VL - 737

SP - 379

EP - 382

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -